A Magnetotelluric Survey of the Kaapvaal Craton and its surroundings: The SAMTEX Experiment

Abstract:

Initiated in 2003, the Southern African Magnetotelluric (MT) Experiment (SAMTEX) is being conducted by a consortium comprising academic, industry and government partners representing five countries from around the world. When completed, it will be the largest land-based MT study yet performed, and to date includes the collection of MT sounding data with broadband (~ 0.002 s to~ 6000 s) magnetotelluric (BBMT) instruments at more than 330 sites. Long period (20 s to~ 10,000 s) magnetotelluric (LMT) instruments were installed at approximately a third of the sites to enhance depth penetration. The total length of the profiles is well over 5,000 km, with a BBMT station spacing of nominally 20 km, and an LMT spacing of 60 km (every third BBMT site) and includes a wide variety of Archean and Proterozoic terrains. The survey is being conducted in order to gain insight into the electrical structure of the crust and …

Año de publicación:

2005

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